JP2000044487A - Calcitonin-prefilled syringe preparation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject preparation useful in e.g. treating hypercalcemia or the like by filling a syringe with a calcitonin injection of reduced adsorptivity onto the wall surface so as to prevent the calcitonin from adsorption onto the syringe and be administrable to humans without impairing its concentration when filled. SOLUTION: This preparation is obtained by filling a syringe of glass or the like having a volume of pref. 1-5 mL or so with a calcitonin injection reduced in adsorptivity onto the wall surface pref. through including a calcitonin and an adsorption-proofing ingredient; wherein the above calcitonin is pref. elcatonin or salmon-derived calcitonin, its content being pref. 5-80 units in the injection, and the above adsorption-proofing ingredient is pref. an anionically charged protein or the like such as albumin; in the case of albumin, its concentration is pref. 0.1-2.0 w/v% or so in the injection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prefilled syringe preparation filled with calcitonin, and more particularly, to a method of preparing a calcitonin injection solution itself by suppressing the adsorption of calcitonin to an injection cylinder or the like. The present invention also relates to a prefilled syringe preparation of calcitonin which can prevent calcitonin from adsorbing to the inner wall of the injection cylinder by performing an adsorption suppressing treatment on the injection cylinder and can accurately administer calcitonin.

[0002]

2. Description of the Related Art Calcitonins are polypeptide hormones involved in blood calcium concentration, and are drugs used for treating hypercalcemia, Paget's disease or osteoporosis, or improving pain in osteoporosis.

[0003] Since calcitonin is decomposed by digestive fluid in the gastrointestinal tract, oral administration is not possible, and administration by injection is performed. However, calcitonin has the property of being adsorbed to the container wall, and there is a known problem that adsorption to the wall proceeds due to external factors such as shaking, and the content of calcitonin in the pharmaceutical solution decreases. Have been. Also, since calcitonins are very effective drugs in very small amounts, they are contained only in very small amounts in the preparation, and therefore, the expected effect is not exhibited even with a slight loss such as wall adsorption. Was pointed out.

As one method for solving such a problem of adsorption, a technique has been developed in which a calcitonin solution is filled into a dealkalized glass container (Patent Document 2).
63509). However, even if this technique is used, the problem of wall surface adsorption cannot be sufficiently solved, and it cannot be administered to humans at the concentration at the time of filling.

[0005] As for other drugs, preparations in which the solution is pre-filled in a syringe are known, but this is intended to prevent bacterial contamination when transferring a drug solution from an individual ampoule package or the like to the syringe. It had nothing to do with the problem of wall surface adsorption, and there was no purpose to prevent it.

[0006]

Since calcitonins are effective drugs in extremely small amounts, slight losses such as wall adsorption, which is not a problem with ordinary drugs, may cause a large difference in pharmacology. If this adsorption is left untreated, there is a concern that problems such as the inability to obtain a predetermined medicinal effect in treatment may occur.

[0007]

Therefore, an object of the present invention is to prevent the adsorption of calcitonin to a container,
It is an object of the present invention to provide a technique which can be administered to human without losing the concentration at the time of filling.

[0008]

Means for Solving the Problems The present inventors have conducted various studies in order to solve the above-mentioned problems, and as a result, they have found that a calcitonin solution which has been prevented from being adsorbed on a wall surface is filled into a syringe,
It has been found that, prior to the filling of the calcitonin solution, the inner wall of the syringe is treated to prevent adsorption, whereby it is possible to prevent the adsorption of calcitonin to the container and to administer calcitonin to humans without impairing the concentration at the time of filling.

[0009] That is, the present invention provides a prefilled syringe preparation obtained by filling a syringe with a calcitonin injection solution having reduced adsorbability to a wall surface. Another object of the present invention is to provide a pre-filled syringe preparation obtained by filling a syringe for calcitonin injection into a syringe which has been treated to prevent adsorption to a wall surface.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Calcitonin, which is an active ingredient of the injection solution of the present invention, is a polypeptide consisting of 32 amino acids. As calcitonin currently commercially available, calcitonin derived from pig, calcitonin derived from salmon, and elcatonin (calcitonin obtained by replacing a disulfide bond of calcitonin from eel with an ethylene bond) are known, and any of these may be used in the present invention. .

The calcitonin is very effective in a very small amount. For example, a single dose of about 10 to 160 units of calcitonin may be administered by injection. Therefore, in the calcitonin injection solution of the present invention, calcitonin is 0.01 to 10,000.
0 unit / ml may be blended.

On the other hand, an injection cylinder (syringe) used as a container for filling a calcitonin solution in the present invention is:
There are glass and resin products, both of which can be used for the prefilled syringe preparation of the present invention, but glass products are more preferable. The volume of the syringe may be selected depending on the amount of the drug solution to be filled, and a volume of about 1 to 5 ml is preferably used.

In one embodiment of the present invention, the syringe is filled with a calcitonin solution which is prevented from being adsorbed on a wall surface (hereinafter referred to as "adhesion preventing calcitonin injection solution").

This anti-adsorption calcitonin injection contains the above-mentioned calcitonin and an anti-adsorption component. The anti-adhesion component used here is a compound that is hydrophobically bonded to the wall surface of the syringe barrel to prevent adsorption. More specifically, a compound having a hydrophobic group in the molecule and having a surface-active effect, or a compound having a surface-active effect is used. It is an ion-charged protein. Examples of the former include polyoxyethylene alcohol ether,
Examples thereof include polyoxyethylene fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, and polyoxyethylene sorbitan fatty acid esters. Examples of the latter anion-charged proteins include gelatin, albumin, and polygenin. In addition, although the economy is reduced, calcitonins can be used as an anti-adsorption component in some cases.

Examples of gelatin among the above-mentioned adsorption preventing components include gelatin purified by the Japanese Pharmacopoeia.
It is not limited to these. One or more gelatins may be used in combination as an anti-adsorption component, and the concentration of the gelatin may be 0.01 to 50 W / V%.
About 0.1 to 2.0 W / V%.
More preferably, the degree is about the same.

Examples of albumin include those having no antigenicity to humans, and the concentration thereof is 0.01 to 50.
It is preferably about W / V%, particularly 0.1 to 2.0.
More preferably, it is about W / V%.

As a solvent for dissolving the calcitonin and the anti-adsorption component, any solvent can be used as long as it is physiologically acceptable as a solvent for injections. Examples thereof include Japanese Pharmacopoeia water for injection, physiological saline and the like.

If necessary, the above-mentioned anti-adsorption calcitonin injection solution may contain, if necessary, a pH adjusting agent (hydrochloric acid, sodium hydroxide, etc.) and a buffering agent (citrate, tartrate, phosphoric acid, etc.) which are usually used in the injection solution. Salts, acetates, etc.), tonicity agents (sodium chloride, glycerin, etc.) and the like. Further, the pH of the above-mentioned injection solution can be appropriately set depending on the type of calcitonin, but is preferably 2.5 to 2.5.
8 range.

Further, another embodiment of the present invention is to fill an injection syringe (hereinafter referred to as “processed injection syringe”) which has been treated to prevent adsorption to a wall surface with a calcitonin injection solution.

The treatment for preventing adsorption to the wall surface can be carried out using a solution containing the above-mentioned adsorption preventing component. More specifically, a solution is prepared by dissolving 0.01 to 50% of the anti-adsorption component in an appropriate solvent, for example, water, and the solution is put into a syringe and the entire surface is prepared for about 1 minute to 4 hours. After wetting, the solution may be discharged, or a calcitonin solution may be added as it is.

In the thus-obtained treated syringe, calcitonins and, if necessary, pH adjusting agents (hydrochloric acid, sodium hydroxide, etc.) and buffering agents (citrate, tartrate, phosphoric acid) usually used in injection solutions are added. By filling an injection containing a salt, an acetate or the like), an isotonic agent (such as sodium chloride or glycerin) or the like, a pre-filled syringe having reduced calcitonin adsorptivity can be obtained. In this case, the pH of the calcitonin injection solution is preferably 2.
It is in the range of 5-8.

[0022]

Next, the present invention will be described in detail with reference to examples and test examples, but the present invention is not limited to these examples.

Example 1 Elcatonin 0.1 mg (5000 international units / mg),
500mg sodium chloride and 800mg gelatin
Was dissolved in water for injection. Add an appropriate amount of hydrochloric acid
The volume was adjusted to 5.0, and the total volume was adjusted to 50 ml with water for injection. After aseptic filtration, 1.0 ml was dispensed into a glass syringe to obtain an elcatonin solution-filled syringe with gelatin.

EXAMPLE 2 0.2 mg of elcatonin (5000 international units / mg),
500mg sodium chloride and 800mg gelatin
Was dissolved in water for injection. Add an appropriate amount of hydrochloric acid
The volume was adjusted to 5.0, and the total volume was adjusted to 50 ml with water for injection. After aseptic filtration, 1.0 ml was dispensed into a glass syringe to obtain a gelatin-added syringe containing an elcatonin solution.

EXAMPLE 3 0.2 mg of salmon calcitonin (5000 international units / m)
g), sodium chloride 500 mg and gelatin 80
0 mg was dissolved in water for injection. An appropriate amount of hydrochloric acid was added thereto to adjust the pH to 3.0, and the total volume was adjusted to 50 ml with water for injection. After aseptic filtration, 0.5 ml was dispensed into a glass syringe to obtain a gelatin-added salmon calcitonin solution-filled syringe.

Example 4 Elcatonin 0.2 mg (5000 international units / mg),
Sodium chloride 500mg and albumin 500m
g was dissolved in water for injection. Add an appropriate amount of hydrochloric acid to this and p
H5.0 and made up to 50 ml with water for injection. After aseptic filtration, 1.0 ml was dispensed into a glass syringe to obtain a syringe filled with albumin-added elcatonin solution.

Example 5 0.2 mg of salmon calcitonin (5000 international units / m)
g), 500 mg of sodium chloride and albumin 5
00 mg was dissolved in water for injection. To this is added an appropriate amount of hydrochloric acid to adjust the pH to 3.0, and the total amount is 50 m with water for injection.
l. After aseptic filtration, 0.5 ml was dispensed into a glass syringe to obtain a salmon calcitonin solution-filled syringe with albumin.

Comparative Example 1 A commercially available formulation containing 10 units of elcatonin ampoule (manufactured by Asahi Kasei, 10 units of elcitonin injection) was used.

Comparative Example 2 A commercially available preparation containing 20 units of elcatonin in ampoules (manufactured by Asahi Kasei, Elcitonin Injection S20 units) was used.

Test Example Adsorption Weight Loss Confirmation Test (Test Method) With respect to the preparations (products of the present invention) obtained in Examples 1 to 5, the drug solution was directly extruded from the preparation after 7 days of production, and the remaining calcitonin was measured. did. on the other hand,
As a comparative product, 1 ml of each of the preparations of Comparative Examples 1 and 2 was sucked into a plastic or glass syringe equipped with a disposable injection needle (25 G × 1 inch, Terumo Corporation) (n = 4), and allowed to stand for 0 or 5 minutes. Use the one placed,
The drug solution was extruded and the remaining calcitonin was measured.

The remaining calcitonin was measured by accurately measuring a predetermined amount of a sample solution, accurately adding an internal standard solution (o-chloronitrobenzene) thereto, and thoroughly mixing the resulting solution, followed by analysis by HPLC. For Comparative Examples 1 and 2, the samples were transferred from the ampules to the tubes as they were. For Examples 1 to 5, the samples were filled into the ampoules on the date of manufacture.
The solution stored at ° C was transferred to a tube, each of which was used as a control solution, and the calcitonin residual ratio in the sample solution was calculated from the following formula.

(Calculation formula)

(Equation 1) Note) The ratio of peak height means peak height of calcitonin / peak height of internal standard.

(Results) The residual calcitonin measured for the product of the present invention and the control product is shown in Table 1.

[0034]

[Table 1]

As is evident from these results, the prefilled syringe preparation of the present invention showed little change in calcitonin concentration, and showed little wall surface adsorption. On the other hand, in the preparation of the comparative example, it was shown that calcitonin was reduced by 10 to 20% or more by wall surface adsorption.

Example 6 Example 1 except that the syringe was changed to a plastic one.
In the same manner as described above, an injection syringe filled with a gelatin-added elcatonin solution was obtained. Also in this case, no decrease in elcatonin due to wall adsorption was observed.

EXAMPLE 7 0.2 mg (5000 international units / mg) of elcatonin and 500 mg of sodium chloride were dissolved in water for injection, and an appropriate amount of hydrochloric acid was added to adjust the pH to 5.0. To 25 ml. Separately gelatin 500
mg was dissolved in water for injection, hydrochloric acid was added in an appropriate amount, and the pH was adjusted to 5.0.
After that, the total amount was 25 ml. Each solution was sterile-filtered, and 0.5 ml of gelatin solution was first dispensed into a glass syringe to wet the inner wall, and then 0.5 ml of elcatonin solution was dispensed to obtain a syringe filled with gelatin-added elcatonin. Also in this case, no decrease in elcatonin due to wall adsorption was observed.

EXAMPLE 8 0.1 mg of elcatonin (5000 international units / mg),
It was dissolved in a physiological saline solution containing 1% albumin to make 50 ml. Take 1 ml of this solution, add 80 ml of physiological saline containing 1% albumin, and further add an appropriate amount of hydrochloric acid to pH 5.
The volume was adjusted to 0, and the total volume was adjusted to 100 ml with a physiological saline solution containing 1% albumin. After aseptic filtration, 1.0 ml was dispensed into a glass syringe to obtain an elcatonin prefilled syringe.

Example 9 Salmon calcitonin 0.1 mg (5000 international units / m)
g) Dissolve in physiological saline containing 1% gelatin,
l. Take 1 ml of this solution, add 80 ml of physiological saline containing 1% gelatin, and further add an appropriate amount of hydrochloric acid to adjust the pH.
The volume was adjusted to 3.0, and the total volume was adjusted to 100 ml with a physiological saline solution containing 1% gelatin. After aseptic filtration, a 1.0 ml aliquot was dispensed into a glass syringe to obtain a salmon calcitonin prefilled syringe.

COMPARATIVE EXAMPLE 3 0.1 mg (5000 international units / mg) of elcatonin was dissolved in physiological saline and made up to 50 ml with water for injection. Take 1 ml of this solution, add 80 ml of physiological saline, and further add an appropriate amount of hydrochloric acid so that the pH becomes 5.0, and the total amount is 100 m
l. After aseptic filtration, 1.0 ml was dispensed into glass ampules to obtain ampoules filled with an elcatonin solution.

Comparative Example 4 0.1 mg of salmon calcitonin (5000 international units / m)
g) was dissolved in physiological saline and made up to 50 ml with water for injection. Take 1 ml of this solution, add 80 ml of physiological saline,
Further, an appropriate amount of hydrochloric acid was added to adjust the pH to 3.0, and the total amount was adjusted to 100 ml. After aseptic filtration, add 1 to glass ampoule.
By dispensing 0 ml each, an ampoule filled with salmon calcitonin solution was obtained.

TEST EXAMPLE 2 Rats weighing about 100 g were fasted overnight, and were divided into 5 rats per group. To each rat group, 0.2 ml (0.02 units / animal) of the prefilled syringe calcitonin preparation obtained in Example 8 or Example 9 and the ampoule calcitonin preparation obtained in Comparative Example 3 or Comparative Example 4 were added. ), And administered in the gluteal muscle under anesthesia. The administration was performed after the prefilled syringe was intact and the ampoule preparation was once drawn into a plastic syringe. Before and 1 hour after the administration, about 0.5 ml of blood was collected from the orbital venous plexus of the rat, the serum was collected, and the calcium concentration (Ca concentration) in the obtained serum was measured. The difference between the Ca concentration one hour after administration and the Ca concentration before administration was determined, and the decrease rate (%) of serum calcium concentration was determined by the following formula.

(Calculation formula)

(Equation 2)

(Results) The reduction rate (%) of the serum calcium concentration when the prefilled syringe preparations of Examples 8 and 9 and the ampule preparations of Comparative Examples 3 and 4 were used is shown in Table 2 below.

[0045]

[Table 2]

[0046]

As described above, the calcitonin prefilled syringe preparation of the present invention can almost completely prevent the problem of calcitonin wall adsorption which has been a problem in the prior art. .

Therefore, since a predetermined amount of calcitonin can be easily and almost exactly administered, it is extremely valuable as a calcitonin injection which can replace the conventional ampoule-containing preparation. that's all

Claims (16)

[Claims] 1. A pre-filled syringe preparation obtained by filling a syringe with a calcitonin injection having reduced adsorbability to a wall surface. 2. The prefilled syringe preparation according to claim 1, wherein the calcitonin is elcatonin, salmon calcitonin, porcine calcitonin or human calcitonin. 3. The prefilled syringe preparation according to claim 1, wherein the calcitonin is elcatonin or salmon calcitonin, and the content thereof is 5 to 80 units. 4. The pre-filled syringe preparation according to any one of claims 1 to 3, wherein the calcitonin injection solution which has been prevented from being adsorbed on a wall surface contains calcitonin and an anti-adsorption component. . 5. The prefilled syringe preparation according to claim 4, wherein the anti-adsorption component is a compound which prevents adsorption by hydrophobic bonding. 6. The prefilled syringe preparation according to claim 5, wherein the compound that prevents adsorption by hydrophobic bonding is a compound that has a hydrophobic group in the molecule and has a surfactant activity. 7. The prefilled syringe preparation according to claim 4, wherein the anti-adsorption component is an anion-charged protein. 8. The anion-charged protein is albumin,
The prefilled syringe preparation according to claim 7, which is gelatin or polygenin. 9. A pre-filled syringe preparation obtained by filling a syringe with calcitonin injection into a syringe which has been treated to prevent adsorption to a wall surface. 10. The prefilled syringe preparation according to claim 9, wherein the calcitonin is elcatonin, salmon calcitonin, porcine calcitonin or human calcitonin. 11. The prefilled syringe preparation according to claim 9, wherein the calcitonin is elcatonin or salmon calcitonin, and the content thereof is 5 to 80 units. 12. The prefilled syringe preparation according to claim 9, wherein the treatment for preventing adsorption to the inner wall surface of the syringe is carried out using a solution containing an anti-adsorption component. 13. The prefilled syringe preparation according to claim 12, wherein the anti-adsorption component is a compound that prevents adsorption by hydrophobic bonding. 14. The prefilled syringe preparation according to claim 13, wherein the compound that prevents adsorption by hydrophobic bonding has a hydrophobic group in the molecule and has a surfactant activity. 15. The prefilled syringe preparation according to claim 12, wherein the anti-adsorption component is an anion-charged protein. 16. The prefilled syringe preparation according to claim 15, wherein the anion-charged protein is albumin, gelatin or polygenin.